Method for identification of a light inductive charger

• US 8,729,852 B2
• Filed: 05/26/2011
• Issued: 05/20/2014
• Est. Priority Date: 06/03/2010
• Status: Active Grant

• Current Assignee: Fu Da Tong Technology Co., Ltd.
• Original Assignee: Fu Da Tong Technology Co., Ltd.
• Inventors: Tsai, Ming-Chiu, Chan, Chi-Che
• Primary Examiner(s): DIAO, M BAYE
• Application Number:
  US13/116,654
• Publication Number:
  US 20110298419A1
• Time in Patent Office: 1,090 Days
• Field of Search: 320/108, 307/104
• US Class Current: 320/108
• CPC Class Codes: H01M 10/46 Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/0029 with safety or protection devices or circuits
• CPC Class Codes: H02J 7/0047 with monitoring or indicating devices or circuits
• CPC Class Codes: H02J 7/0049 Detection of fully charged condition
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

The present invention relates to a method for identification of a light inductive charger, in which a power base includes a light receiving hole to expose a light receiver, and a light emitting component is established in a light emitter of a wireless charging receiver to emit lights towards the light receiving hole. The power base transmits electromagnetic wave energy to the receiving terminal for a short period of time when finding it covered by an object, in a dark place or covered by the wireless charging receiver after having received lights from the light receiver and transmitted the signals to the microprocessor via a voltage detection circuit. The charging module of the wireless charging receiver, if not fully charged, feeds back light signals for the same time period to indicate that charging is required. Then charging energy of electromagnetic waves will be emitted to start charging.

Claims

1. A method for identification of a light inductive charger, wherein the light inductive charger comprises a power base and a wireless charging receiver, the method comprising:

emitting light from a light emitting component of a light emitter of the wireless charging receiver towards a light receiving hole of the power base;

receiving the emitted light at a light receiver of the power base through the light receiving hole of the power base;

determining, by a microprocessor of the power base, brightness of the received emitted light at periodic time intervals; and

if a periodic determination results in a finding that either (a) no light is being emitted or (b) the light has been bright for a long period of time, then no power is emitted by the power base;

if the periodic determination results in the light being indicated bright for a short period of time, emitting power by the power base.

2. The method for identification of the light inductive charger according to claim 1, wherein the power base includes the microprocessor electrically connected with a power supply circuit which can be connected to an external power supply;

wherein the microprocessor is electrically linked with a driving circuit that contains a MOSFET array which is further electrically connected with a power supply resonance circuit;

wherein the power supply resonance circuit is electrically connected to a power supply coil capable of transmitting energy, and is connected in parallel with the light receiver and a voltage detection circuit that can detect changes in voltages of the power supply resonance circuit and the light emitter,

wherein the method further comprises;

converting the voltage changes into electric signals; and

transmitting the converted electric signals to the microprocessor to decide on power transmission.

3. The method for identification of the light inductive charger according to claim 2, wherein the microprocessor of the power base includes a software program capable of examining and analyzing power output from the power supply resonance circuit as well as a light receiving status of the light receiver by using the voltage detection circuit;

deciding if power supply to the wireless charging receiver is needed or not.

4. The method for identification of the light inductive charger according to claim 2, wherein the microprocessor of the power base is electrically connected with a display module capable of indicating operational status, and the display module may be a status indicator lamp, a seven-segment display or an LCD consisting of one or more LEDs.

5. The method for identification of the light inductive charger according to claim 2, wherein the power supply circuit of the power base is electrically connected with a power output interface, which can connect to an external power source and may be a USB, A/C transformer or commercial electricity connector.

6. The method for identification of the light inductive charger according to claim 1, wherein the wireless charging receiver includes a power receiving coil to receive power energy through electromagnetic induction,

wherein the power receiving coil is electrically connected to a receiving resonance circuit which further connects to a rectifying filter circuit able to receive transmitted A/C power input and convert it into D/C power for output;

wherein the rectifying filter circuit connects electrically to a break protection circuit that can receive the signals transmitted, convert these signals into light signals and feed back the light signals to the light emitter, while the break protection circuit is electrically connected with the charging module capable of receiving D/C power from the rectifying filter circuit for charging purpose and of supplying D/C power to an electronic device;

wherein the break protection circuit disconnects the rectifying filter circuit and cuts off the power supply without feeding back light signals to the light emitter when the charging module is fully charged.

7. The method for identification of the light inductive charger according to claim 6, wherein the charging module of the wireless charging receiver is electrically connected with a power output interface connected to a wireless charging device;

and

wherein the power output interface may be a USB, D/C plug or socket installed in the wireless charging device.

8. The method for identification of the light inductive charger according to claim 1, wherein the brightness determination further comprises using programs embedded in the microprocessor to examine changes of lights continuously through comparison between the light in at a previous time point and the current light;

wherein the microprocessor determines gradual darkening status when daylight turns to night;

wherein the microprocessor determines sudden darkening status when the light receiving hole on the power base is covered.

9. The method for identification of the light inductive charger according to claim 1, wherein the power base is set to read light signals from the light receiver through the light receiving hole.

10. The method for identification of the light inductive charger according to claim 1, wherein the wireless charging receiver is a portable electronic device.

11. The method for identification of the light inductive charger according to claim 10, wherein the portable electronic device is one of:

a toy, a phone and a remote controller.

12. The method for identification of the light inductive charger according to claim 1, wherein the periodic determination is performed by a voltage detection circuit.

13. The method for identification of the light inductive charger according to claim 1, wherein the charging of the wireless charging receiver is performed by power emitted as electromagnetic wave energy;

and wherein the power base is an electromagnetic power base.

14. The method for identification of the light inductive charger according to claim 1, wherein the wireless charging receiver was designed for use with a different power base.

15. A system for identifying a light inductive charger, comprising:

the light inductive charger comprising a power base and a wireless charging receiver;

the wireless charging receiver comprising a light emitter;

wherein a light emitting component of the light emitter of the wireless charging receiver emits light towards a light receiving hole of the power base;

wherein a light receiver of the power base receives the emitted light through the light receiving hole of the power base;

wherein a microprocessor of the power base, determines brightness of the received emitted light at periodic time intervals; and

if a periodic determination results in a finding that either (a) no light is being emitted or (b) the light has been bright for a long period of time, then no power is emitted by the power base;

if the periodic determination results in the light being indicated bright for a short period of time, emitting power by the power base.

16. The system of claim 15, wherein the wireless charging receiver identifies the light inductive charger that was designed for a different wireless charging receiver;

and

wherein power energy is emitted to a receiving terminal of the wireless charging receiver.

17. The system of claim 16, wherein the wireless charging receiver is a portable electronic device.

18. The system of claim 17, wherein the portable electronic device is one of:

a digital camera, mobile phone, multimedia player, an audio player, a toy and a remote controller.